PatVeloOpenTracking is a general purpose tracking algorithm for the Velo which only requires hits on a track to be on consecutive sensors. A search in Indico and among the LHCb notes yielded the following results (the choice of references is somewhat arbitrary, I did not research this extensively and just wanted to give some pointers):
LHCb notes:
Indico results:
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ManuelSchiller - 15 Sep 2008